Ahh, so it was more bandwidth-focused than rewards. I'm embarrassed to say that after being in that position less than 6 months ago, I've already forgotten what it's like to not have bandwidth. That's very nice of you to make sure they have enough to keep going. :)

I haven't actually used either of them, so I don't have a personal recommendation. I know that silvergoldbotty requires an upvote every day. For you, it would be around 33% upvote. (100,000/your active SP(3,000)) = 33%.